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I think of noise cancellation and Bluetooth as the "peanut butter and chocolate" of headphones. Each is great on their own, but they're even sweeter when you put them together. The Sennheiser HD 4.50 BTNC wireless headphones offer both at a reasonable price. Music plays wirelessly from your phone, while Sennheiser's NoiseGard™ technology cancels out extraneous sounds around you.

Feature-packed headphones that fit in tight budgets

I think of noise cancellation and Bluetooth as the "peanut butter and chocolate" of headphones. Each is great on their own, but they're even sweeter when you put them together. The Sennheiser HD 4.50 BTNC wireless headphones offer both at a reasonable price. Music plays wirelessly from your phone, while Sennheiser's NoiseGard™ technology cancels out extraneous sounds around you.

My main takeaways — big bass and a firm fit

If you like deep bass from your headphones, the Sennheiser 4.50 BTNC headphones deliver. You get lots of powerful low end, for sure. The highs and mids are there too, but these headphones will especially satisfy those who prefer music with serious punch.

Their fit is a little too snug for my taste. But they feel light to wear, and I know some people — my wife for example — prefer the tighter fit. These headphones certainly won't fall off as you move around. I thought the no-slip grip on the headband was a nice touch — it has a soft, pleasant feel.

Long battery life for travel

These headphones have a solid battery life. You get up to 19 hours of wireless music playback on a full charge, and that's with noise cancellation. You should get through most flights just fine — without scrambling to find a charging outlet at the airport.

Earcup controls for listening and phone calls on the go

Buttons and sliders on the right earcup control music playback, Bluetooth, and noise-canceling functions. They were a little tricky to master at first, but I got the hang of them pretty quick. One of the buttons even controls phone calls, so you can answer and talk as you move along.

Product Research

Features

Overview: The Sennheiser HD 4.50BTNC over-ear wireless headphones
feature NoiseGard active noise cancellation as well as Bluetooth to give you the
freedom to listen to your favorite music anywhere you want without the
distraction of ambient noise. The HD 4.50BTNC headphones come with a USB charging cable, a straight audio cable,
and a soft storage pouch.

NoiseGard: The HD 4.50BTNC Wireless headphones feature
NoiseGard Active Noise Cancellation to shut out unwanted ambient noise and let
in only your music. With a closed-back design, the headphones block much of the
outside noise from your environment. NoiseGard uses two small microphones on the
outside of the ear cup to pick up the remaining noise and generate an opposite
noise-canceling sound wave. All you hear is your music with all of its detail.

Bluetooth: The HD 4.50BTNC headphones are compliant with the
Bluetooth 4.0 standard, and have the following profiles: HFP (Hands-Free Profile), HSP (Headset
Profile), AVRCP (Audio Video Remote Control Profile), and A2DP (Advanced Audio
Distribution Profile). In addition, aptX audio coding provides high quality
audio that is comparable to a wired connection. You can pair the headphones with
most Apple and Android Bluetooth devices, including those with NFC (Near Field
Communication).

Battery: The Bluetooth function is powered by a 3.7-volt
600mAh Lithium-Polymer
rechargeable battery. The battery charges in
approximately 2 hours using the supplied Micro USB charging cable.
A full charge supplies enough power for 25 hours of wireless listening, or 19
hours with Bluetooth and NoiseGard. The
remaining battery level can be monitored through the flashing LED and voice
prompts. The battery life may also be displayed on the screen of your smartphone
or device.

On-board Controls: The HD 4.50BTNCs have built-in controls on
the right ear cup for power, volume, and music/phone call control. Music
controls include play/pause, skip to next track, skip to previous track, fast
forward, and fast reverse. Phone controls include accept/end a call, reject
call, call on hold, and toggle between 2 calls. Established calls can be
transferred from the headphones to the smartphone by turning off the Bluetooth
connection. Using the Voice Control function of your phone, you can make a call
by speaking a command.

Audio Cable: The included 58" audio cable lets you listen to your
music when the battery is exhausted, or when you cannot, or choose not to, use
Bluetooth. The cable terminates into a slender right-angled 3.5mm plug that is compatible
with most smartphone cases. The cable does not have an in-line remote, and the
on-board controls do not work when the power is off.

Specifications:

Frequency Response: 18 Hz to 22 kHz

Impedance: 18 Ω

Sound Pressure Level (SPL): 113 dB (1 kHz, 1 Vrms)

Total Harmonic Distortion (THD): <0.5 % (1 kHz, 100 dB SPL)

Dimensions (Ear Cup): Width 3.033", Height 3.7", Depth 1.85"

Weight: 8.4 ounces (8.9 oz. with cable)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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Q & A

Customer Q&A

Crutchfield askedWhy did you buy this?

High cost/performance value
[ Timothy Oct 05, 2018 ]

Good ratings and reasonable price
[ Brian Sep 17, 2018 ]

headphones with good sound and good noise cancellation technology at a reasonable price
[ K Sep 02, 2018 ]

Because I want to see how good Sennheiser is I've heard good reviews and also I might use on an airplane if I go on vacation
[ Noe Aug 31, 2018 ]

Sennheiser quality and of course the two year warranty vs. the meager one year warranty for comparable headphones. Also the BT 4.0, But, if they squeeze my head to tight they'll be replaced with Phil's
[ Warren Aug 08, 2018 ]

I have an older model Bluetooth Sennheiser headphones and love them. I saw this newer version that got great reviews and had some Crutchfield rewards points to burn so got them for half price and will use them at my beach house.
[ MARK L. Jun 22, 2018 ]

Otis recommendation. To be used by 93 year old God Mother.
[ David M. Jan 19, 2018 ]

Bought as gift for discriminating radio dj
[ Carolyn Dec 13, 2017 ]

Recommended by sales associate, Norm. He has a pair and said they are very good. Also, the price is satisfactory.
[ Catherine Nov 25, 2017 ]

Good reviews, good price, have a pair of wired Sennheizers that sound great.
[ Matthew Sep 14, 2017 ]

I have bought and used Sennheiser products and find them very dependable and consistent with the maker's product claims.
[ David Jul 17, 2017 ]

Sennheiser is a known brand for sound quality and it was reasonably priced with a lot of features.
[ D Jun 23, 2017 ]

I bought a pair of these for my wife and she loves them. She returned the favor...
[ Mark Jun 19, 2017 ]

Best price point for a wireless noise cancelling headphone
[ David May 21, 2017 ]

I have a set of Sennheiser Momentum 2 which I love but needed to find a more economical solution. Reviews have all been very good. I will add my thoughts once received and tested.
[ Gabriel May 14, 2017 ]

2 questions already asked

I am not aware of a replaceable battery. Haven't seen any opening for a battery. In 16 months, battery has never been an issue. I would suggest additional online searches or contact the manufacturer.
[ Scott Nov 15, 2018 ]

For more specifics on the warranty coverage you'll want to contact Sennheiser directly--their support number is 860-434-9190; and you can check their online support site here: https://en-us.sennheiser.com/service-support
Thanks!
[ Larry Feb 05, 2018 ] Staff